Motor.



Patented lune I9, |900. J. B. KELLY.

M 0 T 0 R (Application led Nov. 9, 1899.)

2 Sheets-Sheet I.

(Nu Model.)

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, Patented lune 19,1900.

J. s. KELLY.

rumore.`

(Application led Nov. 9, 1899.)

2.Shebts-Sheet 2.

(No Model.)

YHE rename PETERS 60,. Pnofuwo., N Asnmawmp. c.

UNITED Siu/vriesA PATENT OFFicE.

JOHN I3. KELLY, OF PORTLAND, OREGON, ASSIGNOR OF ONE-HALF TO CHARLES BUSKIRK, OF LODI, CALIFORNIA.

` 'Mo-TOR.

sPEcIFicATIoiv-fcming part of Letterslratent No. 651,862, dated Jane 19, 1900.

A- Applicant fudnovemteralsgg. serial No. 736,344. (No man.)

To otZZ whom, it may concern:

d Beit known that I,`JoHN B. KELLY, a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in Motors; and I do declare the following to be a full, clear, and exact description of the invention, such as will enableoth'- ers skilled in the art to which it appertains to make and use theV same.

The invention relates to motors.

One object of the invention is to provide a motor for any class of Work, more particularly for feeding a sawmill-carriage to all kindsof sawmill-work, and to so combine the parts that the carriage in its travel will be contiguous` to the piston in its movementirom end to endA of the cylinder, thus dispensing with the piston-rod now in use, which has its end connected to the carriage and which in order'to' drive the carriage the full length of the -cylinder must be driven through the head of the cylinder the full s length' of the rod, which doubly increases the space required within which to operate the carriage.

A further object is to provide means for varying the stroke of the piston within the cylinder and correspondingly varying the length of the cylinder, so that the steam-space of the cylinder will not be greater in length than the travel of the piston.

A still further object is to provide a steam sawmill-feed .which shall be simple of construction, efficient in operation, and compara` tively inexpensive of production.V

With these and other objects in viewthe invention consists in certain features of con-` struction and combination of parts,`which will be hereinafter fully described and claimed. A

In the accompanying drawings, Figure 1 is a side elevation of my improved steam sawmill-feed, the ends of one of the carriagerails and its sleeper being broken away. Fig. 2 is a longitudinal vertical sectional view looking toward that side of the machine shown in Fig. 1. Fig. 3 is a top plan view with the carriage removed. Fig. 4 is a vertical cross-sectional view on the line a: .fr of Fig. 2 looking in the direction of the arrow. Fig. 5 is a vertical sectional view through the valve-chests. Fig. 6 is a detail perspective view of the piston-truck, showing in full lines the pistonarm broken oft' and `in dotted lines the earriage-arm connected with the truck. Fig. 7

is a detail perspective view of the lower end of the carriage-arm. Fig. 8 isa vertical sectional view of the movable-cylinder-head lock. Fig. 9 is a cross-sectional view on line y y of Fig. 8. Fig. 10 is a detail perspective view of one of the slide-valves.

, Referringto the drawings, 1 denotes the ties of the track. 2 denotes the centrally-located piston truck-rail supported on said ties. 3 denotes longitudinal sleepers supported on said ties, and 4 denotes rails supported on said sleepers.

d 5 denotes' the part to be moved, shown in the present instance as a sawmill-carriage, which may be of any well-known or approved construction and which travels upon the rails 4. i i

l 6 denotes anangular metallic supportingbeam, preferably inthe form of the letter Z. 7 denotes a steam-cylinder bolted to the said beam and provided in its lower side with a longitudinal slot 8, covered by a flexible band or ribbon 8', secured at its ends within said cylinder. 9` denotes a piston located within said cylinder and provided with an attaching-arm 10, which has an eye or transverse aperture 11, through which the ribbon or band projects. This arm extends through the slot of the cylinder and is pivoted to a wheeled truck 12, which travels on the rail 2. An arm 13 is Iirmly bolted to the carriage and projects downwardly and thence laterally and is formed with prongs 14, which are adapted to pass through vertical apertures l5 in the truck and have a limited vertical movement therein, so as to compensate for any unevenness or irregularities. of the carriage-rails 4.

at b denote the' end steam-chests, which communicate with the cylinder through ports a' b', and c 'denotes the intermediate valvechest, of which there may be as many as may be desired and which communicates with the cylinder intermediatel its ends through the port c'. A

16 denotes an inlet-pipe having branches 17, which communicate with the inlet-ports 18 of the valve-chests. 18 18b 18c denote stopcocks for said branch pipes 17. 19 denotes IOO able bearings and pivoted Ato the valve-rod for 2 shifting said valve Within the chests to reverse the movement of the piston within the cyliny der. 25 denotes a movable cylinder-head which is mounted in one end of said cylinder and is provided With an attaching-arm 26, which is providedw'ithia transverse ,aperture' or eye 27, through which the flexible strap or ribbon 8 passes. projects out through the slot in said cylinder and into a sliding block '28, the sides of- Which embrace vthe head ofthe rail 2 and is heldin place by a transverse pin 29, passing through apertures in the sides of said block and through apertures in the rail. l

31 denotes aYsuitably-mounted saw,1shown in dotted lines, and 32 denotes the log, also shown in dotted lines and supported bythe carriage.

'In'operation,assumingthat it be desired'to savva log of a length corresponding to vthat offthesteam-cylinder,theintermediatevalves chest'or valvechests com municatin g with said cylinder are cuto from the inlet and exhaust pipes 16 and 19 by their respective cocks 18b and 2lb. The `cock l18c is now opened to admit *steam into :the port 18 of the forward valve'chest, and the cock 2la is openedto exhaust steam Jthrough the branch v2O of the rearmost valve-chest. The shifting-levierV is nowV actuated `toshift thel valves in said valvecheststo aposition opposite to that shownlin Fig. fto admitsteam into the forwardend of thecylinderv vaudto exhaust rit from its .rear end. ",lhesteam'having thus been admitted tothe forward end ofthe cylinder Willdrive thepiston to therear end,'and consequently movethe saw-carriage, with its log, a corresponding distance past the rotary'saW-blade, thus severing the log. To return the carriage,the-shifting-lever is moved-in an oppo-` site direction 'tosllift the valves to the posi-` tion shoWn'inFig. "5, thus admitting steam to the cylinder through the rearmost valve-chest and'exhaustingitfromthe Vcylinder through thefforemostvalve-chest. Assumingthat it bedesired 'to' saw logs of a lengthconsiderably'l'e'ssth'an that ofthe cylinder, the rearmost'valvjeechest'orvalve-chests are cut off from communication With'the inlet and-outletpipes by their'cocks 18 21, andthe Vmovabile vpistonheadis slid .up to a pointimmediately'at the rear of the inlet-port cof the cylinderand islocked in position to the'rail' 2 in the manner'hereinbefore described. The Vcocks 18h and Zlb'are now'opened to admit steamto the valve-chest, and the stroke of thegpiston Will'correspondto the 'length of the steamspace within the cylinder,'which length is` the distancebetween theiixed head ofthe cylinf 22 denotes slide-valves The lower end of the arm der and the movable head of the cylinder. By this arrangement only the amount of steam is consumed that is required to reciprocate the piston the desired distance, While if the movable piston-head Were not provided it would require the consumption of as much .steam toreciproca'te the .piston .a short distance in sawing sho'rtlogs as zit would to reciprocate it a long distance.

ofla sawmill-carriage with a `piston in such mannerthat the carriage in its travel Will be contiguous to the piston and will parallel the same throughout the entire movement V,of the piston. c*

Whilel have shown and described my `.invention as applied to saWmill-carriage,iit is evident that the invention ,may beusedfor various other purposes, and for this reason I would have it distinctlvunderstood that Ido not restrict myself to the use'herein shown and described, but reserve'tomyselfthe right to employ the invention in connectioniwith any machine or contrivance wherein a'recip rocating movement is desired to bee'ected. j Havingthus described the inventiom'vvhat is claimed, anddesired tobe securedLby Letters lPatent, is- M 1. ThecOmbinatiOn A of a .longitu,,tinally slotted cylinder; amovable headlocated Withnected to said'pistonand projecting through the slot'in said cylinder,'substantiallyas and for the purpose set'forth. Y. A i

V2. The combination of Va longitudinally; slotted cylinder, a flexible ifband arranged Within said cylinderrto coverthe'slot therein, al suitablyLmounted wheelatru'clQan Varmconnected to said piston and extending-'through the slotinvsaid Acylinder and connected 1to said truck,'and an attaching-arm Y extending from Vsaid truck,lsubstantial ly as and'forthe purpose set'forth. y, v Y y S3. The combination of a longitudinally slotted cylinder, a Vflexible vban'darranged Within said cylin'dertocoverthe slotgtherein, a suitably-mounted wheelLt-ruc'k, janf arm connected to said pistonA and extending ithrough the slot in said cylinder vand connected to said truck, a suitably-m'ountedicarriage, and an arm extendingfrom. said: carriage Aandconnecte'd togsaid'truckjso'as tohave a slight independentverticaland lateral movement relatively thereto, substantiallyy as and forithe purpose set forth. Y

This arrangelment therefore eifects a very material sav- IOG IIC

4. The combination of a longitudinallyslotted cylinder, a flexible band arranged within. said cylinder to @over the slot therein,

la, suitably-mounted Wheel-truck, an arm conneoted to said piston and extending through the slot in said cylinder and connected to said truck, a suitably-mounted carriage, and an arm extending from said carriage and connected to said truck so as to have a slight 1o independent vertical movement relatively JOHN Bl KELLY.

Witnesses:

EMMA M. GILLETT, BENJ. G. COWL. 

